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| author | Tsuda Kageyu <tsuda.kageyu@gmail.com> | 2014-07-17 01:28:02 +0900 |
|---|---|---|
| committer | Tsuda Kageyu <tsuda.kageyu@gmail.com> | 2014-07-17 12:09:14 +0900 |
| commit | e29f1d39e7695ebff50e490f4f3155f229121a32 (patch) | |
| tree | f27236a71185b1983c06fa1b890dd278d9eb6ee3 /ConfigureChecks.cmake | |
| parent | b509106031e6ae3675ad9601e5ae8bf5f3844109 (diff) | |
Added float conversion functions to ByteVector.
Added CMake checks about IEEE754 compliance.
Diffstat (limited to 'ConfigureChecks.cmake')
| -rw-r--r-- | ConfigureChecks.cmake | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake index f2d4cae0..23830f93 100644 --- a/ConfigureChecks.cmake +++ b/ConfigureChecks.cmake @@ -6,8 +6,9 @@ include(CheckLibraryExists) include(CheckTypeSize) include(CheckCXXSourceCompiles) include(TestBigEndian) +include(TestFloatFormat) -# Check if the size of integral types are suitable. +# Check if the size of numeric types are suitable. check_type_size("short" SIZEOF_SHORT) if(NOT ${SIZEOF_SHORT} EQUAL 2) @@ -29,6 +30,16 @@ if(${SIZEOF_WCHAR_T} LESS 2) MESSAGE(FATAL_ERROR "TagLib requires that wchar_t is sufficient to store a UTF-16 char.") endif() +check_type_size("float" SIZEOF_FLOAT) +if(NOT ${SIZEOF_FLOAT} EQUAL 4) + MESSAGE(FATAL_ERROR "TagLib requires that float is 32-bit wide.") +endif() + +check_type_size("double" SIZEOF_DOUBLE) +if(NOT ${SIZEOF_DOUBLE} EQUAL 8) + MESSAGE(FATAL_ERROR "TagLib requires that double is 64-bit wide.") +endif() + # Determine the CPU byte order. test_big_endian(IS_BIG_ENDIAN) @@ -39,6 +50,18 @@ else() set(SYSTEM_BYTEORDER 2) endif() +# Check if the format of floating point types are suitable. + +test_float_format(FP_IEEE754) +if(${FP_IEEE754} EQUAL 1) + set(FLOAT_BYTEORDER 1) +elseif(${FP_IEEE754} EQUAL 2) + set(FLOAT_BYTEORDER 2) +else() + MESSAGE(FATAL_ERROR "TagLib requires that floating point types are IEEE754 compliant.") +endif() + + # Determine which kind of atomic operations your compiler supports. check_cxx_source_compiles(" |